package cn.pugle.base.collect;

import java.util.concurrent.ConcurrentHashMap;

/**
 * @author tzp
 * @since 2020/12/16
 */
public class CHMApp {
    public static void main(String[] args) {
        ConcurrentHashMap<String, String> map = new ConcurrentHashMap<>();
        map.put("a", "b");
    }
}
